This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
Coarse-growing but ornamental perennials with feathery trusses of golden-yellow flowers. They grow anywhere, but prefer sunny places, and may be easily increased by division in spring. There are about eighty kinds known, the best being canadensis, rigida, rugosa, Shorti, and speciosa, varying from 3-6 ft. high; and S. Virgaurea, 1-2 ft.